(2)doubt v.& n.怀疑;疑问
作动词时,其用法如下:
①在否定句和疑问句中,doubt后面接that引导的宾语从句。
②在肯定句中,doubt后面一般接whether或if引导的宾语从句。
作名词时,用法如下:
①用于肯定句时,一般接whether引导的同位语从句。
②用于否定句、疑问句时,一般接that引导的同位语从句。
(3)be in doubt犹豫不决
beyond doubt无疑地
(1)There is some doubt whether he is suitable for the job.
他是否胜任这项工作还有一些疑问。
(2)I have no doubt that you’ll succeed.
我肯定你能成功。
多维训练
(1)单句语法填空
①I don’t doubt that he can finish the task on time.
②I doubt if/whether they can swim across the river.
③There is no doubt that she will come in time.
④I have some doubt whether he will be elected.
⑤When in doubt,we’re here for you.Give us a call.
(2)同义句改写
There is no doubt that our experiment will succeed.(用“介词+名词”改写)
There is no doubt about the success of our experiment.
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